In the wake of the discovery of "black spots" afflicting small bright highlights in Canon 5D Mk II images, I decided to examine the output of other cameras. Since I didn't have many images with things like Christmas lights, I started with a couple recent snowfall pictures and a couple of fireworks, cut out very small portions, and blew them up to 400%. There were artifacts, just not as noticeable as the 5D2 ones. Judge for yourselves!